src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_TEXTCTRL
  14
  15 #include "wx/textctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/log.h"
  20     #include "wx/utils.h"
  21     #include "wx/settings.h"
  22     #include "wx/math.h"
  23 #endif
  24
  25 #include "wx/strconv.h"
  26 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <ctype.h>
  31
  32 #include "wx/gtk/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter *start,
  42                              GtkTextIter *end,
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // remove all tags starting with the given prefix from the start..end range
  57 static void
  58 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  59                               const char *prefix,
  60                               GtkTextIter *start,
  61                               GtkTextIter *end)
  62 {
  63     gulong remove_handler_id = g_signal_connect
  64                                (
  65                                 text_buffer,
  66                                 "remove_tag",
  67                                 G_CALLBACK(wxGtkOnRemoveTag),
  68                                 gpointer(prefix)
  69                                );
  70     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  71     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  72 }
  73
  74 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  75                                        GtkTextBuffer *text_buffer,
  76                                        const wxTextAttr& attr,
  77                                        GtkTextIter *start,
  78                                        GtkTextIter *end)
  79 {
  80     static gchar buf[1024];
  81     GtkTextTag *tag;
  82
  83     if (attr.HasFont())
  84     {
  85         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  86
  87         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  88         wxGtkString font_string(pango_font_description_to_string(font_description));
  89         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  90         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  91                                          buf );
  92         if (!tag)
  93             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  94                                               "font-desc", font_description,
  95                                               NULL );
  96         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  97
  98         if (attr.GetFont().GetUnderlined())
  99         {
 100             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 101             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 102                                              buf );
 103             if (!tag)
 104                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 105                                                   "underline-set", TRUE,
 106                                                   "underline", PANGO_UNDERLINE_SINGLE,
 107                                                   NULL );
 108             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 109         }
 110     }
 111
 112     if (attr.HasTextColour())
 113     {
 114         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 115
 116         const GdkColor *colFg = attr.GetTextColour().GetColor();
 117         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 118                    colFg->red, colFg->green, colFg->blue);
 119         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 120                                          buf );
 121         if (!tag)
 122             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 123                                               "foreground-gdk", colFg, NULL );
 124         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 125     }
 126
 127     if (attr.HasBackgroundColour())
 128     {
 129         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 130
 131         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 132         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 133                    colBg->red, colBg->green, colBg->blue);
 134         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 135                                          buf );
 136         if (!tag)
 137             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 138                                               "background-gdk", colBg, NULL );
 139         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 140     }
 141
 142     if (attr.HasAlignment())
 143     {
 144         GtkTextIter para_start, para_end = *end;
 145         gtk_text_buffer_get_iter_at_line( text_buffer,
 146                                           &para_start,
 147                                           gtk_text_iter_get_line(start) );
 148         gtk_text_iter_forward_line(&para_end);
 149
 150         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 151
 152         GtkJustification align;
 153         switch (attr.GetAlignment())
 154         {
 155             default:
 156                 align = GTK_JUSTIFY_LEFT;
 157                 break;
 158             case wxTEXT_ALIGNMENT_RIGHT:
 159                 align = GTK_JUSTIFY_RIGHT;
 160                 break;
 161             case wxTEXT_ALIGNMENT_CENTER:
 162                 align = GTK_JUSTIFY_CENTER;
 163                 break;
 164 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 165 // (but if new enough pango isn't available it's a mere gtk warning)
 166 #if GTK_CHECK_VERSION(2,11,0)
 167             case wxTEXT_ALIGNMENT_JUSTIFIED:
 168                 if (!gtk_check_version(2,11,0))
 169                     align = GTK_JUSTIFY_FILL;
 170                 else
 171                     align = GTK_JUSTIFY_LEFT;
 172                 break;
 173 #endif
 174         }
 175
 176         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 177         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 178                                          buf );
 179         if (!tag)
 180             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 181                                               "justification", align, NULL );
 182         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 183     }
 184
 185     if (attr.HasLeftIndent())
 186     {
 187         // Indentation attribute
 188
 189         // Clear old indentation tags
 190         GtkTextIter para_start, para_end = *end;
 191         gtk_text_buffer_get_iter_at_line( text_buffer,
 192                                           &para_start,
 193                                           gtk_text_iter_get_line(start) );
 194         gtk_text_iter_forward_line(&para_end);
 195
 196         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 197
 198         // Convert indent from 1/10th of a mm into pixels
 199         float factor;
 200 #if GTK_CHECK_VERSION(2,2,0)
 201         if (!gtk_check_version(2,2,0))
 202             factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 203                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 204         else
 205 #endif
 206             factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 207
 208         const int indent = (int)(factor * attr.GetLeftIndent());
 209         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 210
 211         gint gindent;
 212         gint gsubindent;
 213
 214         if (subIndent >= 0)
 215         {
 216             gindent = indent;
 217             gsubindent = -subIndent;
 218         }
 219         else
 220         {
 221             gindent = -subIndent;
 222             gsubindent = indent;
 223         }
 224
 225         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 226         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 227                                         buf );
 228         if (!tag)
 229             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 230                                               "left-margin", gindent, "indent", gsubindent, NULL );
 231         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 232     }
 233
 234     if (attr.HasTabs())
 235     {
 236         // Set tab stops
 237
 238         // Clear old tabs
 239         GtkTextIter para_start, para_end = *end;
 240         gtk_text_buffer_get_iter_at_line( text_buffer,
 241                                           &para_start,
 242                                           gtk_text_iter_get_line(start) );
 243         gtk_text_iter_forward_line(&para_end);
 244
 245         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 246
 247         const wxArrayInt& tabs = attr.GetTabs();
 248
 249         wxString tagname = _T("WXTABS");
 250         g_snprintf(buf, sizeof(buf), "WXTABS");
 251         for (size_t i = 0; i < tabs.GetCount(); i++)
 252             tagname += wxString::Format(_T(" %d"), tabs[i]);
 253
 254         const wxWX2MBbuf buftag = tagname.utf8_str();
 255
 256         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 257                                         buftag );
 258         if (!tag)
 259         {
 260             // Factor to convert from 1/10th of a mm into pixels
 261             float factor;
 262 #if GTK_CHECK_VERSION(2,2,0)
 263             if (!gtk_check_version(2,2,0))
 264                 factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 265                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 266             else
 267 #endif
 268                 factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 269
 270             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 271             for (size_t i = 0; i < tabs.GetCount(); i++)
 272                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 273             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 274                                               "tabs", tabArray, NULL );
 275             pango_tab_array_free(tabArray);
 276         }
 277         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 278     }
 279 }
 280
 281 static void wxGtkTextInsert(GtkWidget *text,
 282                             GtkTextBuffer *text_buffer,
 283                             const wxTextAttr& attr,
 284                             const wxCharBuffer& buffer)
 285
 286 {
 287     gint start_offset;
 288     GtkTextIter iter, start;
 289
 290     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 291                                      gtk_text_buffer_get_insert (text_buffer) );
 292     start_offset = gtk_text_iter_get_offset (&iter);
 293     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 294
 295     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 296
 297     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 298 }
 299
 300 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 301
 302 extern "C" {
 303 static void
 304 au_apply_tag_callback(GtkTextBuffer *buffer,
 305                       GtkTextTag *tag,
 306                       GtkTextIter *start,
 307                       GtkTextIter *end,
 308                       gpointer textctrl)
 309 {
 310     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 311         g_signal_stop_emission_by_name (buffer, "apply_tag");
 312 }
 313 }
 314
 315 //-----------------------------------------------------------------------------
 316 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 317 //-----------------------------------------------------------------------------
 318
 319 extern "C" {
 320 static gboolean
 321 pred_whitespace (gunichar ch, gpointer user_data)
 322 {
 323     return g_unichar_isspace(ch);
 324 }
 325 }
 326
 327 extern "C" {
 328 static gboolean
 329 pred_non_whitespace (gunichar ch, gpointer user_data)
 330 {
 331     return !g_unichar_isspace(ch);
 332 }
 333 }
 334
 335 extern "C" {
 336 static gboolean
 337 pred_nonpunct (gunichar ch, gpointer user_data)
 338 {
 339     return !g_unichar_ispunct(ch);
 340 }
 341 }
 342
 343 extern "C" {
 344 static gboolean
 345 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 346 {
 347     return !g_unichar_ispunct(ch) || ch == '/';
 348 }
 349 }
 350
 351 //-----------------------------------------------------------------------------
 352 //  Check for links between s and e and correct tags as necessary
 353 //-----------------------------------------------------------------------------
 354
 355 // This function should be made match better while being efficient at one point.
 356 // Most probably with a row of regular expressions.
 357 extern "C" {
 358 static void
 359 au_check_word( GtkTextIter *s, GtkTextIter *e )
 360 {
 361     static const char *URIPrefixes[] =
 362     {
 363         "http://",
 364         "ftp://",
 365         "www.",
 366         "ftp.",
 367         "mailto://",
 368         "https://",
 369         "file://",
 370         "nntp://",
 371         "news://",
 372         "telnet://",
 373         "mms://",
 374         "gopher://",
 375         "prospero://",
 376         "wais://",
 377     };
 378
 379     GtkTextIter start = *s, end = *e;
 380     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 381
 382     // Get our special link tag
 383     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 384
 385     // Get rid of punctuation from beginning and end.
 386     // Might want to move this to au_check_range if an improved link checking doesn't
 387     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 388     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 389         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 390
 391     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 392     gtk_text_iter_forward_char(&end);
 393
 394     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 395     size_t len = strlen(text), prefix_len;
 396     size_t n;
 397
 398     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 399     {
 400         prefix_len = strlen(URIPrefixes[n]);
 401         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 402             break;
 403     }
 404
 405     if(n < WXSIZEOF(URIPrefixes))
 406     {
 407         gulong signal_id = g_signal_handler_find (buffer,
 408                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 409                                                   0, 0, NULL,
 410                                                   (gpointer)au_apply_tag_callback, NULL);
 411
 412         g_signal_handler_block (buffer, signal_id);
 413         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 414         g_signal_handler_unblock (buffer, signal_id);
 415     }
 416 }
 417 }
 418
 419 extern "C" {
 420 static void
 421 au_check_range(GtkTextIter *s,
 422                GtkTextIter *range_end)
 423 {
 424     GtkTextIter range_start = *s;
 425     GtkTextIter word_end;
 426     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 427     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 428
 429     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 430
 431     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 432         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 433
 434     while(!gtk_text_iter_equal(&range_start, range_end))
 435     {
 436         word_end = range_start;
 437         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 438
 439         // Now we should have a word delimited by range_start and word_end, correct link tags
 440         au_check_word(&range_start, &word_end);
 441
 442         range_start = word_end;
 443         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 444     }
 445 }
 446 }
 447
 448 //-----------------------------------------------------------------------------
 449 //  "insert-text" for GtkTextBuffer
 450 //-----------------------------------------------------------------------------
 451
 452 extern "C" {
 453 static void
 454 au_insert_text_callback(GtkTextBuffer *buffer,
 455                         GtkTextIter *end,
 456                         gchar *text,
 457                         gint len,
 458                         wxTextCtrl *win)
 459 {
 460     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 461         return;
 462
 463     GtkTextIter start = *end;
 464     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 465
 466     GtkTextIter line_start = start;
 467     GtkTextIter line_end = *end;
 468     GtkTextIter words_start = start;
 469     GtkTextIter words_end = *end;
 470
 471     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 472     gtk_text_iter_forward_to_line_end(&line_end);
 473     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 474     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 475
 476     au_check_range(&words_start, &words_end);
 477 }
 478 }
 479
 480 //-----------------------------------------------------------------------------
 481 //  "delete-range" for GtkTextBuffer
 482 //-----------------------------------------------------------------------------
 483
 484 extern "C" {
 485 static void
 486 au_delete_range_callback(GtkTextBuffer *buffer,
 487                          GtkTextIter *start,
 488                          GtkTextIter *end,
 489                          wxTextCtrl *win)
 490 {
 491     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 492         return;
 493
 494     GtkTextIter line_start = *start, line_end = *end;
 495
 496     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 497     gtk_text_iter_forward_to_line_end(&line_end);
 498     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 499     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 500
 501     au_check_range(start, end);
 502 }
 503 }
 504
 505
 506 //-----------------------------------------------------------------------------
 507 //  "changed"
 508 //-----------------------------------------------------------------------------
 509
 510 extern "C" {
 511 static void
 512 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 513 {
 514     if ( win->IgnoreTextUpdate() )
 515         return;
 516
 517     if (!win->m_hasVMT) return;
 518
 519     if ( win->MarkDirtyOnChange() )
 520         win->MarkDirty();
 521
 522     win->SendTextUpdatedEvent();
 523 }
 524 }
 525
 526 //-----------------------------------------------------------------------------
 527 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 528 //-----------------------------------------------------------------------------
 529
 530 // common part of the event handlers below
 531 static void
 532 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 533                                 wxEventType eventType, const gchar * signal_name)
 534 {
 535     wxClipboardTextEvent event( eventType, win->GetId() );
 536     event.SetEventObject( win );
 537     if ( win->GetEventHandler()->ProcessEvent( event ) )
 538     {
 539         // don't let the default processing to take place if we did something
 540         // ourselves in the event handler
 541         g_signal_stop_emission_by_name (widget, signal_name);
 542     }
 543 }
 544
 545 extern "C" {
 546 static void
 547 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 548 {
 549     handle_text_clipboard_callback(
 550         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 551 }
 552
 553 static void
 554 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 555 {
 556     handle_text_clipboard_callback(
 557         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 558 }
 559
 560 static void
 561 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 562 {
 563     handle_text_clipboard_callback(
 564         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 565 }
 566 }
 567
 568 //-----------------------------------------------------------------------------
 569 // "expose_event" from scrolled window and textview
 570 //-----------------------------------------------------------------------------
 571
 572 extern "C" {
 573 static gboolean
 574 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 575 {
 576     return TRUE;
 577 }
 578 }
 579
 580
 581 //-----------------------------------------------------------------------------
 582 //  wxTextCtrl
 583 //-----------------------------------------------------------------------------
 584
 585 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 586
 587 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 588     EVT_CHAR(wxTextCtrl::OnChar)
 589
 590     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 591     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 592     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 593     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 594     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 595
 596     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 597     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 598     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 599     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 600     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 601
 602     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 603     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 604     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 605     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 606     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 611 END_EVENT_TABLE()
 612
 613 void wxTextCtrl::Init()
 614 {
 615     m_dontMarkDirty =
 616     m_modified = false;
 617
 618     m_countUpdatesToIgnore = 0;
 619
 620     SetUpdateFont(false);
 621
 622     m_text = NULL;
 623     m_freezeCount = 0;
 624     m_showPositionOnThaw = NULL;
 625     m_gdkHandCursor = NULL;
 626     m_gdkXTermCursor = NULL;
 627 }
 628
 629 wxTextCtrl::~wxTextCtrl()
 630 {
 631     if(m_gdkHandCursor)
 632         gdk_cursor_unref(m_gdkHandCursor);
 633     if(m_gdkXTermCursor)
 634         gdk_cursor_unref(m_gdkXTermCursor);
 635 }
 636
 637 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 638                         wxWindowID id,
 639                         const wxString &value,
 640                         const wxPoint &pos,
 641                         const wxSize &size,
 642                         long style,
 643                         const wxValidator& validator,
 644                         const wxString &name )
 645 {
 646     Init();
 647
 648     Create( parent, id, value, pos, size, style, validator, name );
 649 }
 650
 651 bool wxTextCtrl::Create( wxWindow *parent,
 652                          wxWindowID id,
 653                          const wxString &value,
 654                          const wxPoint &pos,
 655                          const wxSize &size,
 656                          long style,
 657                          const wxValidator& validator,
 658                          const wxString &name )
 659 {
 660     if (!PreCreation( parent, pos, size ) ||
 661         !CreateBase( parent, id, pos, size, style, validator, name ))
 662     {
 663         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 664         return false;
 665     }
 666
 667     bool multi_line = (style & wxTE_MULTILINE) != 0;
 668
 669     if (multi_line)
 670     {
 671         // Create view
 672         m_text = gtk_text_view_new();
 673
 674         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 675
 676         // create "ShowPosition" marker
 677         GtkTextIter iter;
 678         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 679         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 680
 681         // create scrolled window
 682         m_widget = gtk_scrolled_window_new( NULL, NULL );
 683         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 684                                         GTK_POLICY_AUTOMATIC,
 685                                         style & wxTE_NO_VSCROLL
 686                                             ? GTK_POLICY_NEVER
 687                                             : GTK_POLICY_AUTOMATIC );
 688         // for ScrollLines/Pages
 689         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 690
 691         // Insert view into scrolled window
 692         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 693
 694         GTKSetWrapMode();
 695
 696         GtkScrolledWindowSetBorder(m_widget, style);
 697
 698         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 699
 700         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 701     }
 702     else
 703     {
 704         // a single-line text control: no need for scrollbars
 705         m_widget =
 706         m_text = gtk_entry_new();
 707
 708         if (style & wxNO_BORDER)
 709             g_object_set (m_text, "has-frame", FALSE, NULL);
 710     }
 711
 712     m_parent->DoAddChild( this );
 713
 714     m_focusWidget = m_text;
 715
 716     PostCreation(size);
 717
 718     if (multi_line)
 719     {
 720         gtk_widget_show(m_text);
 721     }
 722
 723     // We want to be notified about text changes.
 724     if (multi_line)
 725     {
 726         g_signal_connect (m_buffer, "changed",
 727                           G_CALLBACK (gtk_text_changed_callback), this);
 728     }
 729     else
 730     {
 731         g_signal_connect (m_text, "changed",
 732                           G_CALLBACK (gtk_text_changed_callback), this);
 733     }
 734
 735     if (!value.empty())
 736     {
 737         SetValue( value );
 738     }
 739
 740     if (style & wxTE_PASSWORD)
 741         GTKSetVisibility();
 742
 743     if (style & wxTE_READONLY)
 744         GTKSetEditable();
 745
 746     // left justification (alignment) is the default anyhow
 747     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 748         GTKSetJustification();
 749
 750     if (multi_line)
 751     {
 752         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 753         if (style & wxTE_AUTO_URL)
 754         {
 755             GtkTextIter start, end;
 756             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 757             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 758
 759             // We create our wxUrl tag here for slight efficiency gain - we
 760             // don't have to check for the tag existance in callbacks,
 761             // hereby it's guaranteed to exist.
 762             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 763                                        "foreground", "blue",
 764                                        "underline", PANGO_UNDERLINE_SINGLE,
 765                                        NULL);
 766
 767             // Check for URLs after each text change
 768             g_signal_connect_after (m_buffer, "insert_text",
 769                                     G_CALLBACK (au_insert_text_callback), this);
 770             g_signal_connect_after (m_buffer, "delete_range",
 771                                     G_CALLBACK (au_delete_range_callback), this);
 772
 773             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 774             // block this callback temporarily. This takes care of gtk+ internal
 775             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 776             // which is undesired because only a part of the URL might be copied.
 777             // The insert-text signal emitted inside it will take care of newly formed
 778             // or wholly copied URLs.
 779             g_signal_connect (m_buffer, "apply_tag",
 780                               G_CALLBACK (au_apply_tag_callback), NULL);
 781
 782             // Check for URLs in the initial string passed to Create
 783             gtk_text_buffer_get_start_iter(m_buffer, &start);
 784             gtk_text_buffer_get_end_iter(m_buffer, &end);
 785             au_check_range(&start, &end);
 786         }
 787     }
 788
 789     g_signal_connect (m_text, "copy-clipboard",
 790                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 791     g_signal_connect (m_text, "cut-clipboard",
 792                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 793     g_signal_connect (m_text, "paste-clipboard",
 794                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 795
 796     m_cursor = wxCursor( wxCURSOR_IBEAM );
 797
 798     return true;
 799 }
 800
 801 GtkEditable *wxTextCtrl::GetEditable() const
 802 {
 803     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 804
 805     return GTK_EDITABLE(m_text);
 806 }
 807
 808 // ----------------------------------------------------------------------------
 809 // flags handling
 810 // ----------------------------------------------------------------------------
 811
 812 void wxTextCtrl::GTKSetEditable()
 813 {
 814     gboolean editable = !HasFlag(wxTE_READONLY);
 815     if ( IsSingleLine() )
 816         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 817     else
 818         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 819 }
 820
 821 void wxTextCtrl::GTKSetVisibility()
 822 {
 823     // VZ: shouldn't we assert if wxTE_PASSWORD is set for multiline control?
 824     if ( IsSingleLine() )
 825         gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 826 }
 827
 828 void wxTextCtrl::GTKSetWrapMode()
 829 {
 830     // no wrapping in single line controls
 831     if ( !IsMultiLine() )
 832         return;
 833
 834     // translate wx wrapping style to GTK+
 835     GtkWrapMode wrap;
 836     if ( HasFlag( wxTE_DONTWRAP ) )
 837         wrap = GTK_WRAP_NONE;
 838     else if ( HasFlag( wxTE_CHARWRAP ) )
 839         wrap = GTK_WRAP_CHAR;
 840     else if ( HasFlag( wxTE_WORDWRAP ) )
 841         wrap = GTK_WRAP_WORD;
 842     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 843     {
 844         // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 845 #ifdef __WXGTK24__
 846         if ( !gtk_check_version(2,4,0) )
 847         {
 848             wrap = GTK_WRAP_WORD_CHAR;
 849         }
 850         else
 851 #endif // __WXGTK24__
 852         wrap = GTK_WRAP_WORD;
 853     }
 854
 855     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 856 }
 857
 858 void wxTextCtrl::GTKSetJustification()
 859 {
 860     if ( IsMultiLine() )
 861     {
 862         GtkJustification just;
 863         if ( HasFlag(wxTE_RIGHT) )
 864             just = GTK_JUSTIFY_RIGHT;
 865         else if ( HasFlag(wxTE_CENTRE) )
 866             just = GTK_JUSTIFY_CENTER;
 867         else // wxTE_LEFT == 0
 868             just = GTK_JUSTIFY_LEFT;
 869
 870         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 871     }
 872     else // single line
 873     {
 874 #ifdef __WXGTK24__
 875         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 876         if (!gtk_check_version(2,4,0))
 877         {
 878             gfloat align;
 879             if ( HasFlag(wxTE_RIGHT) )
 880                 align = 1.0;
 881             else if ( HasFlag(wxTE_CENTRE) )
 882                 align = 0.5;
 883             else // single line
 884                 align = 0.0;
 885
 886             gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 887         }
 888 #endif // __WXGTK24__
 889     }
 890
 891 }
 892
 893 void wxTextCtrl::SetWindowStyleFlag(long style)
 894 {
 895     long styleOld = GetWindowStyleFlag();
 896
 897     wxTextCtrlBase::SetWindowStyleFlag(style);
 898
 899     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 900         GTKSetEditable();
 901
 902     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 903         GTKSetVisibility();
 904
 905     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 906     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 907         GTKSetWrapMode();
 908
 909     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 910     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 911         GTKSetJustification();
 912 }
 913
 914 // ----------------------------------------------------------------------------
 915 // control value
 916 // ----------------------------------------------------------------------------
 917
 918 wxString wxTextCtrl::GetValue() const
 919 {
 920     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 921
 922     if ( IsMultiLine() )
 923     {
 924         GtkTextIter start;
 925         gtk_text_buffer_get_start_iter( m_buffer, &start );
 926         GtkTextIter end;
 927         gtk_text_buffer_get_end_iter( m_buffer, &end );
 928         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 929
 930         return wxGTK_CONV_BACK(text);
 931     }
 932     else // single line
 933     {
 934         return wxTextEntry::GetValue();
 935     }
 936 }
 937
 938 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 939 {
 940     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 941     // encoding?
 942
 943     // first check the default text style (we intentionally don't check the
 944     // style for the current position as it doesn't make sense for SetValue())
 945     const wxTextAttr& style = GetDefaultStyle();
 946     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 947                                          : wxFONTENCODING_SYSTEM;
 948
 949     // fall back to the controls font if no style
 950     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 951         enc = GetFont().GetEncoding();
 952
 953     return enc;
 954 }
 955
 956 bool wxTextCtrl::IsEmpty() const
 957 {
 958     if ( IsMultiLine() )
 959         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 960
 961     return wxTextEntry::IsEmpty();
 962 }
 963
 964 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 965 {
 966     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 967
 968     m_modified = false;
 969
 970     if ( !IsMultiLine() )
 971     {
 972         wxTextEntry::DoSetValue(value, flags);
 973         return;
 974     }
 975
 976     wxFontEncoding enc = m_defaultStyle.HasFont()
 977                             ? m_defaultStyle.GetFont().GetEncoding()
 978                             : wxFONTENCODING_SYSTEM;
 979     if ( enc == wxFONTENCODING_SYSTEM )
 980         enc = GetTextEncoding();
 981
 982     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 983     if ( !buffer )
 984     {
 985         // see comment in WriteText() as to why we must warn the user about
 986         // this
 987         wxLogWarning(_("Failed to set text in the text control."));
 988         return;
 989     }
 990
 991     if ( !(flags & SetValue_SendEvent) )
 992     {
 993         EnableTextChangedEvents(false);
 994     }
 995
 996     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 997
 998     if ( !m_defaultStyle.IsDefault() )
 999     {
1000         GtkTextIter start, end;
1001         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1002         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1003                                    &start, &end);
1004     }
1005
1006     if ( !(flags & SetValue_SendEvent) )
1007     {
1008         EnableTextChangedEvents(true);
1009     }
1010
1011     // This was added after discussion on the list
1012     SetInsertionPoint(0);
1013 }
1014
1015 void wxTextCtrl::WriteText( const wxString &text )
1016 {
1017     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1018
1019     // we're changing the text programmatically
1020     DontMarkDirtyOnNextChange();
1021
1022     if ( !IsMultiLine() )
1023     {
1024         wxTextEntry::WriteText(text);
1025         return;
1026     }
1027
1028     // check if we have a specific style for the current position
1029     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1030     wxTextAttr style;
1031     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
1032     {
1033         enc = style.GetFont().GetEncoding();
1034     }
1035
1036     if ( enc == wxFONTENCODING_SYSTEM )
1037         enc = GetTextEncoding();
1038
1039     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1040     if ( !buffer )
1041     {
1042         // we must log an error here as losing the text like this can be a
1043         // serious problem (e.g. imagine the document edited by user being
1044         // empty instead of containing the correct text)
1045         wxLogWarning(_("Failed to insert text in the control."));
1046         return;
1047     }
1048
1049     // First remove the selection if there is one
1050     // TODO:  Is there an easier GTK specific way to do this?
1051     long from, to;
1052     GetSelection(&from, &to);
1053     if (from != to)
1054         Remove(from, to);
1055
1056     // Insert the text
1057     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1058
1059     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1060     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1061     // won't work when frozen, text view is not using m_buffer then
1062     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1063     {
1064         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1065                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1066     }
1067 }
1068
1069 wxString wxTextCtrl::GetLineText( long lineNo ) const
1070 {
1071     wxString result;
1072     if ( IsMultiLine() )
1073     {
1074         GtkTextIter line;
1075         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1076
1077         GtkTextIter end = line;
1078         // avoid skipping to the next line end if this one is empty
1079         if ( !gtk_text_iter_ends_line(&line) )
1080             gtk_text_iter_forward_to_line_end(&end);
1081
1082         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1083         result = wxGTK_CONV_BACK(text);
1084     }
1085     else
1086     {
1087         if (lineNo == 0)
1088             result = GetValue();
1089     }
1090     return result;
1091 }
1092
1093 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1094 {
1095   /* If you implement this, don't forget to update the documentation!
1096    * (file docs/latex/wx/text.tex) */
1097     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1098 }
1099
1100 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1101 {
1102     if ( IsMultiLine() )
1103     {
1104         GtkTextIter iter;
1105
1106         if (pos > GetLastPosition())
1107             return false;
1108
1109         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1110
1111         if ( y )
1112             *y = gtk_text_iter_get_line(&iter);
1113         if ( x )
1114             *x = gtk_text_iter_get_line_offset(&iter);
1115     }
1116     else // single line control
1117     {
1118         if ( pos <= GTK_ENTRY(m_text)->text_length )
1119         {
1120             if ( y )
1121                 *y = 0;
1122             if ( x )
1123                 *x = pos;
1124         }
1125         else
1126         {
1127             // index out of bounds
1128             return false;
1129         }
1130     }
1131
1132     return true;
1133 }
1134
1135 long wxTextCtrl::XYToPosition(long x, long y ) const
1136 {
1137     if ( IsSingleLine() )
1138         return 0;
1139
1140     GtkTextIter iter;
1141     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1142         return -1;
1143
1144     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1145     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1146         return -1;
1147
1148     return gtk_text_iter_get_offset(&iter) + x;
1149 }
1150
1151 int wxTextCtrl::GetLineLength(long lineNo) const
1152 {
1153     if ( IsMultiLine() )
1154     {
1155         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1156         if (lineNo > last_line)
1157             return -1;
1158
1159         GtkTextIter iter;
1160         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1161         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1162         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1163     }
1164     else
1165     {
1166         wxString str = GetLineText (lineNo);
1167         return (int) str.length();
1168     }
1169 }
1170
1171 int wxTextCtrl::GetNumberOfLines() const
1172 {
1173     if ( IsMultiLine() )
1174     {
1175         return gtk_text_buffer_get_line_count( m_buffer );
1176     }
1177     else // single line
1178     {
1179         return 1;
1180     }
1181 }
1182
1183 void wxTextCtrl::SetInsertionPoint( long pos )
1184 {
1185     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1186
1187     if ( IsMultiLine() )
1188     {
1189         GtkTextIter iter;
1190         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1191         gtk_text_buffer_place_cursor( m_buffer, &iter );
1192         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1193         if (IsFrozen())
1194             // defer until Thaw, text view is not using m_buffer now
1195             m_showPositionOnThaw = mark;
1196         else
1197             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1198     }
1199     else // single line
1200     {
1201         wxTextEntry::SetInsertionPoint(pos);
1202     }
1203 }
1204
1205 void wxTextCtrl::SetEditable( bool editable )
1206 {
1207     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1208
1209     if ( IsMultiLine() )
1210     {
1211         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1212     }
1213     else // single line
1214     {
1215         wxTextEntry::SetEditable(editable);
1216     }
1217 }
1218
1219 bool wxTextCtrl::Enable( bool enable )
1220 {
1221     if (!wxWindowBase::Enable(enable))
1222     {
1223         // nothing to do
1224         return false;
1225     }
1226
1227     gtk_widget_set_sensitive( m_text, enable );
1228
1229     return true;
1230 }
1231
1232 // wxGTK-specific: called recursively by Enable,
1233 // to give widgets an opportunity to correct their colours after they
1234 // have been changed by Enable
1235 void wxTextCtrl::OnEnabled( bool enable )
1236 {
1237     // If we have a custom background colour, we use this colour in both
1238     // disabled and enabled mode, or we end up with a different colour under the
1239     // text.
1240     wxColour oldColour = GetBackgroundColour();
1241     if (oldColour.Ok())
1242     {
1243         // Need to set twice or it'll optimize the useful stuff out
1244         if (oldColour == * wxWHITE)
1245             SetBackgroundColour(*wxBLACK);
1246         else
1247             SetBackgroundColour(*wxWHITE);
1248         SetBackgroundColour(oldColour);
1249     }
1250 }
1251
1252 void wxTextCtrl::MarkDirty()
1253 {
1254     m_modified = true;
1255 }
1256
1257 void wxTextCtrl::DiscardEdits()
1258 {
1259     m_modified = false;
1260 }
1261
1262 // ----------------------------------------------------------------------------
1263 // event handling
1264 // ----------------------------------------------------------------------------
1265
1266 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1267 {
1268     if ( enable )
1269     {
1270         g_signal_handlers_unblock_by_func(GetTextObject(),
1271             (gpointer)gtk_text_changed_callback, this);
1272     }
1273     else // disable events
1274     {
1275         g_signal_handlers_block_by_func(GetTextObject(),
1276             (gpointer)gtk_text_changed_callback, this);
1277     }
1278 }
1279
1280 bool wxTextCtrl::IgnoreTextUpdate()
1281 {
1282     if ( m_countUpdatesToIgnore > 0 )
1283     {
1284         m_countUpdatesToIgnore--;
1285
1286         return true;
1287     }
1288
1289     return false;
1290 }
1291
1292 bool wxTextCtrl::MarkDirtyOnChange()
1293 {
1294     if ( m_dontMarkDirty )
1295     {
1296         m_dontMarkDirty = false;
1297
1298         return false;
1299     }
1300
1301     return true;
1302 }
1303
1304 void wxTextCtrl::SetSelection( long from, long to )
1305 {
1306     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1307
1308     if (from == -1 && to == -1)
1309     {
1310         from = 0;
1311         to = GetValue().length();
1312     }
1313
1314     if ( IsMultiLine() )
1315     {
1316         GtkTextIter fromi, toi;
1317         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1318         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1319
1320         gtk_text_buffer_place_cursor( m_buffer, &toi );
1321         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1322     }
1323     else // single line
1324     {
1325         wxTextEntry::SetSelection(from, to);
1326     }
1327 }
1328
1329 void wxTextCtrl::ShowPosition( long pos )
1330 {
1331     if (IsMultiLine())
1332     {
1333         GtkTextIter iter;
1334         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1335         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1336         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1337         if (IsFrozen())
1338             // defer until Thaw, text view is not using m_buffer now
1339             m_showPositionOnThaw = mark;
1340         else
1341             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1342     }
1343 }
1344
1345 wxTextCtrlHitTestResult
1346 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1347 {
1348     if ( !IsMultiLine() )
1349     {
1350         // not supported
1351         return wxTE_HT_UNKNOWN;
1352     }
1353
1354     int x, y;
1355     gtk_text_view_window_to_buffer_coords
1356     (
1357         GTK_TEXT_VIEW(m_text),
1358         GTK_TEXT_WINDOW_TEXT,
1359         pt.x, pt.y,
1360         &x, &y
1361     );
1362
1363     GtkTextIter iter;
1364     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1365     if ( pos )
1366         *pos = gtk_text_iter_get_offset(&iter);
1367
1368     return wxTE_HT_ON_TEXT;
1369 }
1370
1371 long wxTextCtrl::GetInsertionPoint() const
1372 {
1373     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1374
1375     if ( IsMultiLine() )
1376     {
1377         // There is no direct accessor for the cursor, but
1378         // internally, the cursor is the "mark" called
1379         // "insert" in the text view's btree structure.
1380
1381         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1382         GtkTextIter cursor;
1383         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1384
1385         return gtk_text_iter_get_offset( &cursor );
1386     }
1387     else
1388     {
1389         return wxTextEntry::GetInsertionPoint();
1390     }
1391 }
1392
1393 wxTextPos wxTextCtrl::GetLastPosition() const
1394 {
1395     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1396
1397     int pos = 0;
1398
1399     if ( IsMultiLine() )
1400     {
1401         GtkTextIter end;
1402         gtk_text_buffer_get_end_iter( m_buffer, &end );
1403
1404         pos = gtk_text_iter_get_offset( &end );
1405     }
1406     else // single line
1407     {
1408         pos = wxTextEntry::GetLastPosition();
1409     }
1410
1411     return (long)pos;
1412 }
1413
1414 void wxTextCtrl::Remove( long from, long to )
1415 {
1416     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1417
1418     if ( IsMultiLine() )
1419     {
1420         GtkTextIter fromi, toi;
1421         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1422         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1423
1424         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1425     }
1426     else // single line
1427     {
1428         wxTextEntry::Remove(from, to);
1429     }
1430 }
1431
1432 void wxTextCtrl::Cut()
1433 {
1434     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1435
1436     if ( IsMultiLine() )
1437         g_signal_emit_by_name (m_text, "cut-clipboard");
1438     else
1439         wxTextEntry::Cut();
1440 }
1441
1442 void wxTextCtrl::Copy()
1443 {
1444     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1445
1446     if ( IsMultiLine() )
1447         g_signal_emit_by_name (m_text, "copy-clipboard");
1448     else
1449         wxTextEntry::Copy();
1450 }
1451
1452 void wxTextCtrl::Paste()
1453 {
1454     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1455
1456     if ( IsMultiLine() )
1457         g_signal_emit_by_name (m_text, "paste-clipboard");
1458     else
1459         wxTextEntry::Paste();
1460 }
1461
1462 // If the return values from and to are the same, there is no
1463 // selection.
1464 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1465 {
1466     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1467
1468     if ( !IsMultiLine() )
1469     {
1470         wxTextEntry::GetSelection(fromOut, toOut);
1471         return;
1472     }
1473
1474     gint from, to;
1475
1476     GtkTextIter ifrom, ito;
1477     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1478     {
1479         from = gtk_text_iter_get_offset(&ifrom);
1480         to = gtk_text_iter_get_offset(&ito);
1481
1482         if ( from > to )
1483         {
1484             // exchange them to be compatible with wxMSW
1485             gint tmp = from;
1486             from = to;
1487             to = tmp;
1488         }
1489     }
1490     else // no selection
1491     {
1492         from =
1493         to = GetInsertionPoint();
1494     }
1495
1496     if ( fromOut )
1497         *fromOut = from;
1498     if ( toOut )
1499         *toOut = to;
1500 }
1501
1502
1503 bool wxTextCtrl::IsEditable() const
1504 {
1505     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1506
1507     if ( IsMultiLine() )
1508     {
1509         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1510     }
1511     else
1512     {
1513         return wxTextEntry::IsEditable();
1514     }
1515 }
1516
1517 bool wxTextCtrl::IsModified() const
1518 {
1519     return m_modified;
1520 }
1521
1522 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1523 {
1524     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1525
1526     if ( key_event.GetKeyCode() == WXK_RETURN )
1527     {
1528         if ( HasFlag(wxTE_PROCESS_ENTER) )
1529         {
1530             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1531             event.SetEventObject(this);
1532             event.SetString(GetValue());
1533             if ( GetEventHandler()->ProcessEvent(event) )
1534                 return;
1535         }
1536
1537         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1538         //        probably is
1539         if ( IsSingleLine() )
1540         {
1541             // This will invoke the dialog default action, such
1542             // as the clicking the default button.
1543
1544             wxWindow *top_frame = m_parent;
1545             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1546                 top_frame = top_frame->GetParent();
1547
1548             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1549             {
1550                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1551
1552                 if (window->default_widget)
1553                 {
1554                     gtk_widget_activate (window->default_widget);
1555                     return;
1556                 }
1557             }
1558         }
1559     }
1560
1561     key_event.Skip();
1562 }
1563
1564 GtkWidget* wxTextCtrl::GetConnectWidget()
1565 {
1566     return GTK_WIDGET(m_text);
1567 }
1568
1569 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1570 {
1571     if ( IsMultiLine() )
1572     {
1573         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1574                                         GTK_TEXT_WINDOW_TEXT );
1575     }
1576     else
1577     {
1578         return GTK_ENTRY(m_text)->text_area;
1579     }
1580 }
1581
1582 // the font will change for subsequent text insertiongs
1583 bool wxTextCtrl::SetFont( const wxFont &font )
1584 {
1585     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1586
1587     if ( !wxTextCtrlBase::SetFont(font) )
1588     {
1589         // font didn't change, nothing to do
1590         return false;
1591     }
1592
1593     if ( IsMultiLine() )
1594     {
1595         SetUpdateFont(true);
1596
1597         m_defaultStyle.SetFont(font);
1598
1599         ChangeFontGlobally();
1600     }
1601
1602     return true;
1603 }
1604
1605 void wxTextCtrl::ChangeFontGlobally()
1606 {
1607     // this method is very inefficient and hence should be called as rarely as
1608     // possible!
1609     //
1610     // TODO: it can be implemented much more efficiently for GTK2
1611     wxASSERT_MSG( IsMultiLine(),
1612                   _T("shouldn't be called for single line controls") );
1613
1614     wxString value = GetValue();
1615     if ( !value.empty() )
1616     {
1617         SetUpdateFont(false);
1618
1619         Clear();
1620         AppendText(value);
1621     }
1622 }
1623
1624 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1625 {
1626     if ( !wxControl::SetForegroundColour(colour) )
1627         return false;
1628
1629     // update default fg colour too
1630     m_defaultStyle.SetTextColour(colour);
1631
1632     return true;
1633 }
1634
1635 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1636 {
1637     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1638
1639     if ( !wxControl::SetBackgroundColour( colour ) )
1640         return false;
1641
1642     if (!m_backgroundColour.Ok())
1643         return false;
1644
1645     // change active background color too
1646     m_defaultStyle.SetBackgroundColour( colour );
1647
1648     return true;
1649 }
1650
1651 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1652 {
1653     if ( IsMultiLine() )
1654     {
1655         if ( style.IsDefault() )
1656         {
1657             // nothing to do
1658             return true;
1659         }
1660
1661         gint l = gtk_text_buffer_get_char_count( m_buffer );
1662
1663         wxCHECK_MSG( start >= 0 && end <= l, false,
1664                      _T("invalid range in wxTextCtrl::SetStyle") );
1665
1666         GtkTextIter starti, endi;
1667         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1668         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1669
1670         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1671
1672         return true;
1673     }
1674     //else: single line text controls don't support styles
1675
1676     return false;
1677 }
1678
1679 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1680 {
1681     gtk_widget_modify_style(m_text, style);
1682 }
1683
1684 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1685 {
1686     Cut();
1687 }
1688
1689 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1690 {
1691     Copy();
1692 }
1693
1694 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1695 {
1696     Paste();
1697 }
1698
1699 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1700 {
1701     Undo();
1702 }
1703
1704 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1705 {
1706     Redo();
1707 }
1708
1709 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1710 {
1711     event.Enable( CanCut() );
1712 }
1713
1714 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1715 {
1716     event.Enable( CanCopy() );
1717 }
1718
1719 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1720 {
1721     event.Enable( CanPaste() );
1722 }
1723
1724 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1725 {
1726     event.Enable( CanUndo() );
1727 }
1728
1729 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1730 {
1731     event.Enable( CanRedo() );
1732 }
1733
1734 wxSize wxTextCtrl::DoGetBestSize() const
1735 {
1736     // FIXME should be different for multi-line controls...
1737     wxSize ret( wxControl::DoGetBestSize() );
1738     wxSize best(80, ret.y);
1739     CacheBestSize(best);
1740     return best;
1741 }
1742
1743 // ----------------------------------------------------------------------------
1744 // freeze/thaw
1745 // ----------------------------------------------------------------------------
1746
1747 void wxTextCtrl::Freeze()
1748 {
1749     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1750
1751     if ( HasFlag(wxTE_MULTILINE) )
1752     {
1753         if (m_freezeCount++ == 0)
1754         {
1755             // freeze textview updates and remove buffer
1756             g_signal_connect (m_text, "expose_event",
1757                               G_CALLBACK (gtk_text_exposed_callback), this);
1758             g_signal_connect (m_widget, "expose_event",
1759                               G_CALLBACK (gtk_text_exposed_callback), this);
1760             gtk_widget_set_sensitive(m_widget, false);
1761             g_object_ref(m_buffer);
1762             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1763             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1764             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1765             // gtk_text_view_set_buffer adds its own reference
1766             g_object_unref(buf_new);
1767             // This mark should be deleted when the buffer is changed,
1768             // but it's not (in GTK+ up to at least 2.10.6).
1769             // Otherwise these anonymous marks start to build up in the buffer,
1770             // and Freeze takes longer and longer each time it is called.
1771             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1772                 gtk_text_buffer_delete_mark(m_buffer, mark);
1773         }
1774     }
1775 }
1776
1777 void wxTextCtrl::Thaw()
1778 {
1779     if ( HasFlag(wxTE_MULTILINE) )
1780     {
1781         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1782
1783         if (--m_freezeCount == 0)
1784         {
1785             // Reattach buffer and thaw textview updates
1786             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1787             g_object_unref(m_buffer);
1788             gtk_widget_set_sensitive(m_widget, true);
1789             g_signal_handlers_disconnect_by_func (m_widget,
1790                     (gpointer) gtk_text_exposed_callback, this);
1791             g_signal_handlers_disconnect_by_func (m_text,
1792                     (gpointer) gtk_text_exposed_callback, this);
1793             if (m_showPositionOnThaw != NULL)
1794             {
1795                 gtk_text_view_scroll_mark_onscreen(
1796                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1797                 m_showPositionOnThaw = NULL;
1798             }
1799         }
1800     }
1801 }
1802
1803 // ----------------------------------------------------------------------------
1804 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1805 // ----------------------------------------------------------------------------
1806
1807 // FIXME: when dragging on a link the sample gets an "Unknown event".
1808 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1809 // a buggy sample, or something else
1810 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1811 {
1812     event.Skip();
1813     if( !HasFlag(wxTE_AUTO_URL) )
1814         return;
1815
1816     gint x, y;
1817     GtkTextIter start, end;
1818     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1819                                                 "wxUrl");
1820
1821     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1822                                           event.GetX(), event.GetY(), &x, &y);
1823
1824     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1825     if (!gtk_text_iter_has_tag(&end, tag))
1826     {
1827         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1828                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1829         return;
1830     }
1831
1832     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1833                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1834
1835     start = end;
1836     if(!gtk_text_iter_begins_tag(&start, tag))
1837         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1838     if(!gtk_text_iter_ends_tag(&end, tag))
1839         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1840
1841     // Native context menu is probably not desired on an URL.
1842     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1843     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1844         event.Skip(false);
1845
1846     wxTextUrlEvent url_event(m_windowId, event,
1847                              gtk_text_iter_get_offset(&start),
1848                              gtk_text_iter_get_offset(&end));
1849
1850     InitCommandEvent(url_event);
1851     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1852     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1853     GetEventHandler()->ProcessEvent(url_event);
1854 }
1855
1856 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1857 {
1858     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1859
1860     // GtkTextView starts a drag operation when left mouse button is pressed
1861     // and ends it when it is released and if it doesn't get the release event
1862     // the next click on a control results in an assertion failure inside
1863     // gtk_text_view_start_selection_drag() which simply *kills* the program
1864     // without anything we can do about it, so always let GTK+ have this event
1865     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1866 }
1867
1868 // static
1869 wxVisualAttributes
1870 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1871 {
1872     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1873 }
1874
1875 #endif // wxUSE_TEXTCTRL